Kishore, A. K., Kavitha, K. N. S., Ratnam, P. V., Raman, Y., Krishna, B. B. and Keerthi, M. V. (2017) “Comparative study of various intra ocular lens formulae by IOL master”, International Journal of Research in Medical Sciences, 3(11), pp. 3391–3398. doi: 10.18203/2320-6012.ijrms20151198.